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                比特集合                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div style="background: white" align="left"><span style="font-size: medium"><span style="color: #200000">　　比特集合是一种抽象数据类型</span><span style="color: #200000">(Abstract Data Type) </span><span style="color: #200000">，其包含一个集合</span><span style="color: #200000">S</span><span style="color: #200000">，并支持如下几种操作：</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　</span><span style="color: #200000">INS M : </span><span style="color: #200000">将元素</span><span style="color: #200000"> M </span><span style="color: #200000">插入到集合</span><span style="color: #200000">S</span><span style="color: #200000">中；</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　</span><span style="color: #200000">DEL M : </span><span style="color: #200000">将集合</span><span style="color: #200000">S</span><span style="color: #200000">中所有等于</span><span style="color: #200000"> M </span><span style="color: #200000">的元素删除；</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　</span><span style="color: #200000">ADD M : </span><span style="color: #200000">将集合</span><span style="color: #200000">S</span><span style="color: #200000">中的所有元素都增加数值</span><span style="color: #200000">M </span><span style="color: #200000">；</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　</span><span style="color: #200000">QBIT k : </span><span style="color: #200000">查询集合中有多少个元素满足其二进制的第</span><span style="color: #200000"> k</span><span style="color: #200000">位为</span><span style="color: #200000"> 1 </span><span style="color: #200000">。</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　初始时，集合</span><span style="color: #200000">S</span><span style="color: #200000">为空集。请实现一个比特集合，并对于所有的</span><span style="color: #200000">QBIT</span><span style="color: #200000">操作输出相应的答案。</span></span></div></p><hr/><h3>输入格式</h3><p><div style="background: white" align="left"><span style="font-size: medium"><span style="color: #200000">　　输入第一行包含一个正整数</span><span style="color: #200000">N</span><span style="color: #200000">，表示操作的数目。</span><span style="color: #200000"><br />
</span><span style="color: #200000">　　接下来</span><span style="color: #200000">N</span><span style="color: #200000">行，每行为一个操作，格式见问题描述。</span></span></div></p><hr/><h3>输出格式</h3><p><div style="background: white" align="left"><span style="font-size: medium"><span style="color: #200000">　　对于每一个</span><span style="color: #200000">QBIT</span><span style="color: #200000">操作，输出一行，表示相应的答案。</span></span></div></p><hr/><h3>样例输入</h3><pre>8
INS 1
QBIT 0
ADD 1
QBIT 0
QBIT 1
DEL 2
INS 1
QBIT 1
</pre><hr/><h3>样例输出</h3><pre>1
0
1
0
</pre><hr/><h3>提示</h3><p><p>数据规模和约定<br />
　　时间限制2s。<br />
　　对于30%的数据，1 &le; N &le; 10000。<br />
　　对于100%的数据，1 &le; N &le; 500000；QBIT操作中的k满足, 0 &le; k &lt; 16。INS/DEL操作中，满足0 &le; M &le; 10^9；ADD操作中, 满足0 &le; M &le; 1000。<br />
注意<br />
　　注意集合S可以包含多个重复元素。<br />
&nbsp;</p></p><hr/><h3>题目来源</h3><p>2012国家集训队Round 1 day4</p>
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